Machine for stripping printers  rollers



(No Model.)

H. BAKER.

MACHINE POR STRIPPINGPRINTERS ROLLERS. No. 319,544. Patented June 9, 1885.

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UNITED STATES HENRY BAKER, oE cA'rsKILL, NEW YoEK.

l:voxel-INE FOR STRIPPING PRINTERS5 RoLLERs.

s-PEcirrcArIoN forming part of Letters Patent Nogsiasie, aated'rune 9,1aa5. i

f l 'Application mea April 11, rsa1. (No moan.)

To all whom it may concern:

Be it known that I, HENRY BAKER, of Catskill, in the county of Greene and State of New York, have invented a new and `useful Improvement in Machines for Stripping Printers7 Rollers; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, making a part of this specification.

My invention relates to an improved machine for stripping printers rollers, and has for its object to facilitate the removal of the coating of the roller when it is worn out, so that the rollerrod may be recoated. It consists in the combination of mechanism, as hereinafterfully described, whereby the covering material upon the central rod of the roller is stripped therefrom by forcing longitudinally over the rod a disk adapted to encircle the same closely.

In the accompanying drawings, Figure l is a top view of my improved roller-stripper. Fig. 2 is a vertical longitudinal section through the same, in line x x of Fig. l, and Fig. 3 is a transverse section through the screws, in line g/ y of Fig. 1, illustratingthe traveling stripper in elevation, the roller to be stripped being removed.

Upon a base-plate, A, and adapted to revolve freely within journal-bearings in brackets or standards B B, are mounted two parallel threaded shafts, C C. Upon the end of each of these screw-shafts C C, which project beyond their jonrnal-bearings, is secured a pinion or cog-wheel, D, to rotate therewith.

An intermediate pinion, E, secured upon ya suitable pivotal axis, E', is mounted to rotate upon standards or pillow-blocks B', so as to gear into both of the cog-wheels D D. Ihe outer end of the axial shaft E is fitted with a crank, F, by means whereof power is applied to the machine. The cog-wheels D D are of equal diameter, so that the shafts C C shall both rotate at the same speed when driven by the pinion E.

Upon the standards B B, and midway between the screw-shafts C C, suitable bearings, G G', are formed to receive and support one end of the core or central rod, H, of a printers roller. Fach bearing consists, preferably,

of a rod or bar projecting inwardly from the standard B, and each is recessed at its outer end to form a seat for the end of the roller-rod. 'Ihese bearings may either be fixed rigidly to the frame or .may be threaded to Vwork through a threaded opening in the standard,'so as to adapt them for adjustment to engage rollers of different lengths. a

The stripping device consists of a. frame or carrier, I, which, by preference, is cylindrical in form, and is mounted centrally between two threaded sleeves or nuts, c a, running upon the screw-shafts C C, by means of arms. connecting the nuts with the frame.

Within the cylindrical frame I, and transversely to its axis, are mounted one or more detachable centrally perforated plates or disks, K K, the perforation b in each being of a slightly larger diameter' than the central rod, IzI, of the printing-roller. These plates or disks K K are held in position within the frame I by means of buttons c c, pivoted upon the frame, and which will admit of the disks being removed at pleasure, so that plates having apertures of different diameters to suit roller-rods of different sizes may be used with the same frame. The outer edge of each aperture b in the disks K K is preferably beveled or countersunk, to facilitate the insertion of the end of the rod II therein.

In using my improved stripping device the frame or carrier I, with the disks K K in position therein, is moved by the action of the screw-shafts to one end of the machine. One end of the axial rod or core H of the roller is then inserted in the recess or seat in the end of the xed bearing-bar G, and by :a rotation of the screws C C, produced by turning the crank F, the disks K K are passed over the opposite end of said axial rod to embrace the same. A continued rotation of the screwshafts will then canse the frameI to move forward, so that the disks K shall slide upon the axial rod II of the roller, and as the rod is closely embraced by the disks, the coating thereon will be stripped therefrom, so that the rod will pass out from the opposite side of the stripping-frame perfectly clean. The strip ping-frame having thus been carried to the opposite end of the machine, the next roller to be stripped may be inserted on the other IOO side ofthe stripper to be supported by the bearing-bar G', so-that the return movement` of the frame may be utilized in stripping this roller. A roller may thus be operated at each movement of the-stripper from one end to th other of the screw-shafts C C.

It is evident that the machine maybe read'- ily modied so that the frame I shall be fixed and the support G, upholding the outer end of the roller, be made to travel, by means of an endless screw or screws,to and from the frame,

so as to force the core through the perforated plate inserted therein; and I contemplate such a reversal in the mode of operating the devices for stripping the roller and in the construction of theV machine to accomplish the` same, as-a part of my invention.

I claim as my invention- 1. In a machine for stripping printers7 rollers, the combination of a perforated plate adapted to receive and closely embrace the core of the roller with parallel screw-shafts mounted to rotate on each. side thereof, and

Withfnutstraveling uponsaid screws, by which the plate is moved 'back and; forthalong the same to or from a bearing for one end of the roller, substantially in the manner and for the purpose herein set forth.

2.. The combination, in a machine for strip- *ping printers rollers, lWith a traveling frame SAMUEL A. BAKER, WM. J onsBURY. 

